Magazine pencil



sept. 1, 19.25.

.l J. MOST `MAGAZINE PENCIL lill..

Filed Sept. 25,

,05 nvt/.EN Tof? Luc/WJ. Mast er ATTORNEY Patched sept. 1,1925. c

UNITED STATES LUCIFER J. MOST, F NEW YORK, N. Y., ASSIGNOR TO MABIE,TODD d: COMPANY, 0F NEW YORK, N. Y., A CORPORATION OF NEW' YORK.'

MAGAZINE PENCIL.

Application led September 25, 1928. Serial No. 590,303.

To all whom z't may concern.'

Be it known that I, LUCIFER J. MOST, a. citizen of the United States,and a resident of the borough and county of Bronx, in

the cityand State of New York, have invented certain new and usefulImprovements in Magazine Pencils, of which the following is aspecification, referencebeing made to the accompanying drawings, forminga part thereof.

'My invention relates I particularly to magazine-pencils having areservoir for holding a plurality of reserve leads within the body ofthe pencil in conjunction with a lead-propelling and retractingmovement,v

have become worn, broken or jammed in use .may be removed from thepencil, and thereafter to replace duplicate parts within th propellingmechanism.

The objects of my invention are, among other things, to provide asimplified and easily operated pencil of this type in Iwhich the'variouselements in thev lead movement are compactly arranged to perform theseveral functions, yet are also capable of being detached from oneanother by the more or less unskilled user, and new parts replaced insuch movement mechanism, followed by a ready reassembling of themovement and securing same in the casing body. Furthermore, I have .alsoprovided improved means to .adjust and control the relative amount 0 offriction between the movable lead carrier and the feed-operating memberhaving the usual spiral groove cut therein to cause the advance orretraction of the lead carrier within the body of the pencil, so thatthe 5 lead-carrier when in use may not beforced back into the movementby pressure on the writing. surface, which is likely to occurparticularly when the lead is hard.

Further benefits and advantages embodied in m pencil structure will behereinafter descrlbed and then set forthA in the appended claims.

' A preferred embodiment of my invention is illustrated in theaccompanying drawings in which-w disassembled, and their relative l Fig..1 is a side view of the pencil, partly 1n section, to show the relativelocation. of

the parts comprising the lead-propelling movement;

Fig. 2 Ais alongitudinal sectional view of the pencil; and

Fig. 3 is a composite side view showing the different parts lin themovement when -positions with one another.

throughout the several figures.

Referring to Figs. 1 and 2, the outer casing 4 constitutes the body ofthe pencil having the integrally formed conical nozzle 5 at the writingend terminating in the opening 6 through which the lead 7 projects whenadvanced into writing position by the lead-propelling movement. The lead7 is held in the tubular lead-carrier 8 which is longitudinally slottedat 9 in the usual manner to hold the stub end of the lead 7. The carrier8 slides freely in the tubular conical tip 10 which is knurled at 11 tofit tightly in the casing 4 as shown in Fig. 1. Mounted YYconcentricallywithin the ini ner bore 12 of the tip 10 is the inwardlyextendingguide-tube 13 longitudinally slotted at 14 and formed with exteriorv.threads 15 on its inner end. The diameterv of the guide-tube 13 is suchas to provide an annular space 16 within the tip 10 to contain theforward end of the spirally grooved tube or feed operating member 17which isy fitted over and surrounds the guide-tube 13 as shown in Figs.1 and 2. The base of the tube 17 is crimped or otherwise secured to thecylindrical sleeve 18 within which is telescoped the hollow barrel 19;-both sleeve 18 and barrel 19 being` carried inside the casing 4;'theouter end ofthe sleeve 18 carries the operating head .20 rotatable onthe barrel 19, all as shown in Fig. 2. The outer end of the barrelA 19is interiorly threaded at 21 to removably hold the cap 22 to which theeraser 23 may be attached. The cylindrical space 24 within the barrel 19constitutes a reservoir for the reserve leads (not shown), and the cap22 prevents the leads carried inthe reservoir from falling out of thebody of the pencil. The forward end of the barrel 19 carries the in 25which engages the slot 14 in the .guide tube 13 to hold the barrel 19stationary.

Contained within the lead carrier 8 is Similar numerals referto similarpart's 'pro the sliding ejector pin 26 having its tip 'resting againstthe rear end of the lead 7 as shown in Fig. 2. The inner end of the leadcarrier 8 has the projecting stud 27 passing through the slot 14 in theguide tube and operating through the spiral groove 28 in the tube 17;the ejector pin 26 also carries its separate stud 29 which also passesthrough the slot 14 and engages and operates through the groove 2,8, asshown in Figs. 1 and 2. Axial rotary movement between the guide tube 13and the spirally grooved tube 17 relatively to each other will cause thelead carrier 8 and ejector pin 26 to advance or retract within thecasing 4 in the usual manner according to the direction of rotation.

To holdA the operative parts of the lead propelling and ejectingmovement in position, I use the circular screw-nut 30 (Figs. 2 and 3)interiorly threaded to engage the exteriorly threaded end 15 ofVtheguide tube 13. The nut 30 carries the circular flange 31 which isadapted to bear on the annular shoulder 32 formed in the forward end ofthe barrel 19,- and the screwing of the nut in close fit as shown inFig. 2 binds the guide tube 13 and spirally-grooved tube 17 together sothat the movement may be operated by twisting the head 20. This nut 30when forcibly screwed down on the threaded end 15 forces the barrel 19and tube 17.forward1y against the tip 10; this compression acts tolessen slightly the-length of the tube 17 by contracting the widths ofthe spiral groove 28 and so frictionally grip the studs 27 and 29 toprevent the retraction of the lead carrier 8- when pressure is exertedon the lead 7 in use. This nut 30 functions not only to hold the variousparts of the movement in` osition, but also varies the grip of the guldetube 13 and spirally-grooved tube 17 on the lead carrier 8.

When disassembling the movement the screw nut 30 is removed from thetube 13; then the tube 17 and barrel 19 are rotated to disengage thelead carrier 8 and ejector pin 26, and afterwards the tube 17 isdisengaged from the tube 10, the parts being as shown diagrammaticallyin Fig. 3. Upon reassembling the parts are brought together in reverseorder, and the screw nut 30 is secured on the threaded end 15 and turneduntil the forward end of the tube 17 engages the tip 10 as shown in Fig.2, the pressure being varied at will.

`Various changes may be made in the structural details of the pencilherein shown and described without departing from the principle of myinvention as particularly pointed out in the claims.

I claim as my invention:

1. In a pencil,alead-propelling movement comprising a lead carrier, astraight slotted comprising a lead carrier, a straight slotted guidetube containing said carrier and a spirally grooved propelling tuberotatable relativelyto said guide tube to advance or retract saidcarrier operatively connected therewith, all said members being detach-Aable relativel from one another, and means mounted on t e inner end ofsaid guide tube to engage said propelling tube to hold the latter adjustably in operative position under variable tension.

3. In a pencil, alead-propelling movement comprising a lead carrier, astraight slotted guide tube containing said carrier having -its innerend exteriorly threaded and a spirally grooved propelling tube rotatablerelatively to said guide tube to advance or retract said carrieroperatively connected therewith, all said members being detachablerelatively from one another, and a screw nut mounted on the inner end ofsaid guide tube to engage vsaid propelling tube to hold the latter inoperative position.

4. In a pencil, alead-propelling movement comprising a lead carrier, astraight slotted ide tube containing said 'carrier having lts inner endexteriorly threaded and a spirally grooved .propelling tube rotatablerelatively to said guide tube to advance or retract said carrieroperatively connected therewith, all said members being detachablerelatively from one another, vand a screw nut mounted on the inner endof said guide tube to engage said propelling tube to hold the latteradjustably in operative position under variable tension.

5,-In a pencil, a lead-propelling movement comprising a tip, a leadcarrier and an ejector pin within said carrier, a straight slotted guidetube mounted on said tip to contain said carrier and ejector pin and aspirally grooved propelling tube rotatable relatively to said guidetube, separate means on said carrier and ejector pin engaging both saidtubes, all said members being detachable relatively from one another,and means mounted on the inner end of said guide tube to engage saidpropelling tube to hold the latter in operative position.

6. In a pencil,v a lead-propelling movement comprising a tip, a leadcarrier and an ejector pin within said carrier, a straight slotted guidetube mounted on said tip to contain saidcarrier and ejector pin and asov spirally grooved prxpelling tube rotatable relatively to said gui etube, separate means on said carrier and e'ector pin engaging both saidtubes, all sai members being detachable relatively from one another. andmeans mounted on the inner end of said guide tube to engage said prolling tube to force the latter with varia le pressure against said tip.

7.` In a pencil, a lead-pro elling movement comprising a tip, a leacarrler, and an ejector in within said carrier, a straight slotted guidetube kmounted on said tip to contain said carrier and ejector pin havingits inner end exteriorly threaded, and a splrally grooved propellingtube rotatable relatively to said guide tube, separate means -on saidCarrier and ejector pin engaging both said tubes, all said members beingdetachable relatively from one another, and a screwnut mounted on theinner end of said guide tube to enga said propelling tube to force thelatter with variable pressure against said tip.

8. In a pencil, an outer casing having 'an integrally formed conicalnozzle, a conical tip fitted in said nozzle,-a lead-propelling movementcomprising a lead carrier projectable through said tip and nozzle, astraight slotted ide tube mounted on said tip and havin its inner endexteriorly threaded, a spiral y grooved propelling tube surrounding saidguide tube and rotatable relatively thereto, a stud on saidcarrierprojecting through said guide tube and engaging said spiralgroove,`and a screw-nut mounted on the inner end of said guide tubeptoengage said propelling tube to longitudinally compress the latteragainst said tip.

9. In a pencil, an outer casin having an inte gli formed conical nozz e,a conical tip t in said nozzle, va lead-propelling movement comprising alead carrier projectable through sald tip and nozzle, a straight slottedguide tube mounted on said tip and having its inner end exteriorlythreaded, a spirall grooved propelling tube surrounding saidygulde tubeand rotatable relativel thereto, a stud on said carrier projecting trough said guide tube and engaging saidspiral groove, and a screwnutmounted on the inner end of said guide tube to enga e said ropellng tubelongitudinally and:I variab y compress the latter against said tip toadjust the frictional engagement between said stud and said groove.

10. In a pencil, an outer casin having an integrally formed conical nozze at the writing end and a reserve lead chamber in the opposite end, aconical tip fitted in said nozzle, a lead-propelling movement comprisinga lead carrier projectable through said tip and nozzle, a straightslotted guide tube mounted on said tip and having its inner endexteriorly threaded, a spirally grooved propelling tube surrounding saidguide tube and rotatable relatively thereto, a stud on said carrierprojecting through said guidetube'and engaging said-spiral groove, and ascrew-nut mounted on the inner end of said guide tube and actuatedthrough said reserve lead chamber to engage said propelling tube tolongitudinally compress the latter against said tip.

11.,In a'pencil, an outer casing having an. integrally formed conicalnozzle at the writing end and a reserve lead chamber in the oppositeend, a conical tip fitted in said nozzle, a lead-propelling movementcomprising a lead carrier projectable through said tip and nozzle, astraight slotted guide tube mounted on said tip and having its inner endexteriorly threaded, a spirally grooved propelling tube surrounding saidguide tube and rotatable relatively thereto, a stud on said carrierprojecting through said guide tube and engaging said spiral groove, andascrew-nut mounted on the inner end of said guide tube and actuatedthrough said reserve lead chamber to engage said propelling tube tolongitudinally and variably compress the latter against said tip-toadjust the frictional engagement between said stud and said groove.

LUCIFER J. Mos'r.

